Combing machine



Filed Jan. 28, 1930 [22 van/0r:- gnfi WM J //is f/forne Patented Oct. 20, 1931 UNITED stares ATENT OFFICE JOHN WILLIAM: NASMITI-I, F I'IE ATON MERSEY, ENGLAND COMBINE} MACHINE Application filed January 28, 1930, Serial Ila-424,050, and. in Great Britain December 18, 1929.

The invention relates to combing machines for textile fibres, such machines being of that generic type wherein nippers hold the fibre to be combed and in which detaching means 3 are employed for detaching the tuft whilst at the same time drawing the latter through a top comb which penetrates such tuft.

According to the invention the detaching nip point is moved towards the nippers durm ing the tuft-detaching period whilst preserving substantially the relationship of the piecing roller nip to the detaching nip at all times. This movement of the detaching nip and of the piecing roller nip towards the u combing machine nippers lends itself very suitably to the advancing of a comb in front of the detaching nip during detaching, instead of movement of the comb towards the detaching point with the nippers, as previgo ously proposed by me, when the nippers move towards the detaching point. My invention therefore contemplates also this movement of'the top comb when the detaching nip point is moving towards the nipperswhere such a top comb movement is considered desirable. The movement of the detaching nip point and the piecing nip rendersit quite unnecessary to move the nippers of'the combing machine towards the detaching-point, and the whole of the machine is thus simplified.

The invention is very applicable to the detaching means described and claimedin the present applicantsprior specification accompanying application for Letters Patent of .3 the United States No. 413,340 wherein a machine of the moving nipper type a detaching roller co-acts with the usual combing cylinder segment during the detaching period to form a detaching nip and there is neither of which latter rollers is in contact with the detaching roller proper. The invention will now be described by way of ex; ample as applied to such an arrangement, reference being had to the accompanying drawings wherein Figurel is a diagrammatic side elevation showing the relative arrangement of parts of operation from a common shaft; and 59 Figures 2 and 3 are diagrams showing the provided a single pair of piecing rollers,

may be oscillated in any manner, as by a rock so shaft and levers,

Describing now the invention in the form illustrated in the drawings, 5 and 6 are piecing rollers and 7 c is the detaching roller which co-acts with a segment of a combing cylc5 inder 8. i

The shaft ends of the roller 7 are housed in bushings which engage in a weight hook 9 and also in the forked lever 10. Cast with the hook 9 is an arm 11 provided with a slot 12 along which slot is adjustable the pivot 13 of a link 14. The outer end of the link 14 carries bearings for the top piecing roller 6 which rests upon, and as willbe seencan by the construction now to be described roll around, the lower roller 5. The slot 12 permits'very accurate adjustment of the link 14 so that the roller 6 may be held with the necessary clearance from the roller 7 at all times and in all positions, for reasons stated in the prior specification No. 413,340, whilst accompanying it in its to and fro motion according to this present invention. The latter motion is derived from the weight hook 9 which is pivoted through bracket 9ato a lever 15 on the shaft 16 suitably oscillated by a cam in the manner known in combing machines.

Adjustability is secured by means of the slots 17 and screw 19.

The fork 10 which engages the bushings of the necks of the shaft of roller 7 is pivoted on a pivot pin 20 carried by an adjusting lever 21 which itself pivots on a fixed fulcrum pin 22 in the machine. The other end of lever 21,

to the left of the figure, is slotted as shown at 23 and a clamping screw 24 is provided to clamp this end in adjusted position. They position of fulcrum 20 of the fork 10 may thus be regulated.

The top comb can receive to and fro motion from the shaft 16 by means of a short arm 26 of the lever 15 thereon through connecting parts as now to be described. A link 27 is articulated to the arm 26 and to a threearmed lever 28 which is pivoted on a stud 29 fixed on the machine framing. The short arm 30 of this lever 28 carries the pivot pin 31 which is the top comb pivot. On the same pin 31 pivots the top comb lifting lever 32 which has at its upper end an adjustment screw 33 which may be readily adjusted to vary the moment of contact of the free end with a top comb carrier 34, the lever 32 normally resting against an antifriction bowl 35 studded on the hook 9, during the detaching period, that is to say when the top comb 25 and the carrier 3% have fallen by theirown weight to allow the former to assume its tuft combing position. The top comb 25 is adjustable by the slot 36 and clamping screw 37 around the point 38, and the carrier rests in its to and fro movement on an anti-friction bowl 39 during detaching.

In Figure 1 and also in the diagram Figure2 the detaching roller 7, top piecing roller 6 and the top comb 25 are shown in their most backward position, that is to say nearest to the nippers. Counter-clockwise rotation of the shaft 16 moves the Weight hook 9 to the left and thus moves the roller 7 in that direction, the top piecing roller 6 also rolling in that direction on roller 5. F or the first period of movement of the roller 7 itremains in contact with the cylinder segment until its path intersects the normal arcuate path of fork 10, and at this point the weight of the roller 7-and which weight includes the weighting put upon it by the hook 9 with any convenient weighting means for the hook, such as a spring--is taken by the fork 10, continued movement of the roller 7 being in a path which is clear of the cylinder 8. At the same time the movement of the shaft 16 has through'members 26,27, and 28, caused movement of the top comb carrier 34 around its pivot 31, towards the left of Figure 1, and movement of the anti-friction bowl 35 with the weight hook 9 has caused angular movement of the lever 32 around its pivot 31, the screw 33 contacting withthe top comb carrier 34-and lifting it. The parts are then in the position shown in Figure 3, the reverse movements again bringing the roller 7 and piecing roller 6 and the top comb 25, to the position of Figure 2, during the detaching and top combmg.

here it is desired to use a fixed top comb, the parts and connections for moving it to and fro may be omitted andonly the intermittent comb lifting means described and illustrated may be employed.

1. In a. combing machine a combing cylinder segment and a detaching roller co-acting to form a detaching nip, a piecing element,

bearings for the roller and for the piecing element, and means for moving such piecing element to and from the machine nipper.

2. In a combing machine a combing cylinder segment and a detaching roller co-acting to form a detaching nip, a pair of piecing rollers, bearings for the detaching roller and the upper piecing roller of the pair, and means for moving such bearings to and from the machine nipper.

3. In a combing machine a combing cylinder segment and a detaching roller co-acting to form a detaching nip, an upper piecing roller, a bearing carrier for the upper piecin g roller and the detaching roller, and means for oscillating the carrier to and from the machine nipper.

4:. In a combing machine a combing cylinder segment and a detaching roller co-acting to form a detaching nip, a pair of piecing I rollers, a carrier for the upper piecing roller. an arm articulated in such carrier and engaging the detaching roller, means for oscillating the carrier, and a pivoted fork engaging and supporting the detaching roller to move in an arcuate path which is eccentric to the combing cylinder segment path, as the roller carrier oscillates.

5. In a combing machine a combing cylinder segment and a detaching roller c )-acting to form a detaching nip, 2. pair of piecing rollers, a carrier for the upper piecing roller, an articulated arm borne by such carrier and engaging as a weight hook the detaching roller, means for oscillating the carrier, and

a pivoted fork engaging and supporting the detaching roller to move in an arcuate path which is eccentric to the combing cylinder segment path as the carrier oscillates.

6. In a combing machine a combing cylinder segment and a detaching roller co-acting to form a detaching nip, a pair of piecing rollers, a carrier for the detaching roller and the upper piecing roller, an oscillatable shaft, and transmission means between the movable bearings for the detaching roller and piecing element. a top comb, a movable and pivoted carrier for such top comb, and means for synchronously oscillating the movable bearings and top comb carrier to and from the machine nipper and for lifting the said comb carrier.

8. In a combing machine a combing cylinder segment and a detaching roller co-acting to form a detaching nip, a piecing element, a carrier for the detaching roller and the piecing element, an oscillatable shaft and transmission means between such shaft and the carrier, a top comb carrier, a movable pivot therefor, a lever connection between the oscillatable shaft and the top comb carrier pivot, a lifting lever for the top. comb carrier and means for operating such lever from the oscillatable shaft.

In testimony whereof, I have hereunto set my hand.

JOHN WILLIAM NASMITH. 

